Air-inlet valve for intake-manifolds of internal-combustion engines.



Y F. JACKSON. AIR INLET VALVE FOR INTAKE MANIFOLDS OF INTERNAL COMBUSTION ENGINES.

' APPLICATION FILED MAY I4. I9I4.

1,15 1,1 05. A Patented Aug. 24, 1915.

- q gwmwm al FRANK JACKSON, or DENVER, oononnno.

AIR-INLET VALVE Fort rN'rnnn-ivmnrronns. or INTERNAL-COMBUSTION ENGINES.

To all whom it may concern:

Be it known that I, FRANK JACKSON, a citizen of'the United States of America, residing in the city and county of Denver and State of Colorado, have invented anew and useful Air-Inlet Valve for Intake-Manifolds of Internal-Combustion Engines, of which the following is a specification.

My invention relates to improvements in valves for admitting air to the intake manifolds of internal: combustion engines, an more particularly thevstyle of engine used in connection with automobiles.

The object of the invention is to provide a valve of this character which can be operated by the person. at the steering wheel to admi-tadditional air to the gas mixture in this intake manifold in varying quantities, as may be required, whereby increased owerand ,elficiency of the engine is ob-- tained with smaller consumption of fuel, and a consequent minimizing of the heating of the engine. I accomplish these objects by the mechanism illustrated in, the accompanying drawings, in which:

Figure 1, is a side view illustrating the application of the'valve tov an automobile engine, and the manner of its operation from the steering wheel- Fig- 2,. is a. front view of the valve, the inlet thereof being partially uncovered. Fig. 3, is a view the reverse of Fig: 2. Fig. 4-, line 44 of Fig. 2. Fig. 5, is a front view of the operating lever and parts by which it is secured to the steering post. And Fig. 6, is a side view of Fig. 5.

Similar letters of reference refer to similar parts throughout the several views.

Referring to the accompanying drawings,the numeral 1 indicates the cylinders comprising the engine of an automobile; 2, the carbureter; and 3, the intake manifold, which connects with the engine in the usual manner. The intake 3 at a suitable point above the carbureter, is provided with a threaded aperture, in which is screwed one end of a stem 4, having an axial inlet hole 5. This stem constitutes the main or body portion of the valve, and is preferably hexagonal in cross section in order to accommodate a wrench. stem terminates in a short reduced portion or neck 6, upon which is mounted a plate 7 which is rigidly held thereon, by upset- Specification of Letters Patent.

is a sectional view on. the

The outer end of the IatentedAug. 24, 1915.

Application filed Iviay 14, 1914. SerialiN'o. 838,509.

ting theend of the neck upon the plate, as shown in Fig. 1, the upset portion 8 extending slightly above the plate, and its surface being smoothly finished to form a valve seat. The plate: 7 is preferably of the form shownv in Figs. 2 and 3, and is provided with extensions9 and 10. The extension 9 has an offset 11 at its extremity, which is on a level with the valve seat 8, and resting upon the offset 11,, and the valve seat 8 is a cap or plate, which formsthe cut-0E 12 of the valve. This cut-ofli is pivotally secured to the extension 9, adjacent to the offset 11, by a screw 13,. betweenthe head of which and the cut-off 12 is interposed a bowed spring washerl i, which exerts. a continuous resilient tension upon the cut-off, whereby the same is held in close contact with the valve seat, and the wear, both of the seat and cut-off, is automatically compensated. The portion of the edge of the cut-off which passes over the inlet 5,, is preferably formed into a semi-circular recess of a radius corresponding to that. of the said inlet, and as the cut-off isturned upon its pivot screw 13, the mouth of the inlet may be contracted to admit varying quantities of air, or the inlet may bewhol lyclosed conditions may require. The free endv of the cut-off extends beyond the adjiacent edge of the plate 7 and is provided with an aperture in which one end of a flexible, operating wire 15 is secured, the opposite end of which is connected to an operating lever, to be hereinafter described.

The extension 10 of the plate 7 terminates in a strip 16, which extends at rightangles to the extension, and this strip is folded o-r bent upon itself, to form, an eye or loop 17, in which is held one end of a flexible tube or housing 18, by clamping the free end of the strip 16 to the extension 10, by a screw 19, as shown in Fig. 2. The housing 18, is preferably in the form of a tightlywound coil of flexible wire, the axial" passage through which is of sufficient diameter to allow the operating wire 15 to pass loosely through it. The opposite end of the housing is connected to the steering post 20, adacent to the steering wheel 21, in the following manner: Upon the steering post, adjacent to the steering wheel, is rigidly secured a supporting plate 22,

by a yoke 23, which surrounds the steering post, the ends or: wholly opened, as

V ceive clamping nuts 24.

of which are threaded and pass through apertures in the ends of the plate 22, and re- The plate 22 is outwardly bowed, as shown, bowed portion is riveted,"or otherwise rigidly secured, a plate 25, the free end of which terminates in a strip, or bent upon itself to form 26, which holds the other end of the flexible housing 18, the extremity of the said strip being screwed down upon the plate 25, so as to clamp the within the eye 26. The other end of the wire 15, which extends out through the latter'end of the housing 18, is secured to an operating lever 27, one end of which is pivotally connectedto the plate 25. By operating the lever 27, the wire 15 is caused to turn the cut-off 12, to the limit of its opening or closing movement, or to any intermedlate point, thereby to admit a1r 1n any required quantity to the intake manifold, in excess of that which passes through the carbureter. I The lever 27 is clamped by its pivot against the plate 25-, to produce a fric-. tional contact between the said lever and plate, and by'this means, together with the pressure exerted by the bowed 7 spring washer 14:, the cut-01f 12 is securely held at any point of adjustment. v

The flexible housing can be curved to conform to any necessary outline, in extending it from the intake manifold to the ioperating lever on the steering 10st, and the wire 15 being flexible, is not a 'ected thereby, and as the housing prevents the wire 15 from buckling, any thrust or pull at one end by the operating lever transmits a corresponding action at the other or cut-ofi. operating end of the wire. I

Having described my invention, what I Copies of this patent may be obtained for and upon the Y which is folded an eyeor loop 1 end of the housing 18 claim as new and desire to secure by Letters Patent, is: .e V

1. The combination with the intake inane fold of an internal combustion engine, of an inlet valve, having'a threaded end whichis screwed into said manifold, a plate secured upon the 0pposite end of said stem, slightly beyond said plate to form a valve seat, an offset on said plate onalevel with the valve seat, a screw extending through said plate adjacent to said ofiset, afcut-off pivotally mounted on the screw and bearing on the said valve seat and offset, and'a bowed resilient washer interposed between the cut-ofi and the head of the screw.

2. The combination with the intake manifold of an automobile engine, ofan inlet tube threaded to said manifold, havinga short neck at-its outer end, a plate having an aperture which fits upon said neck, said neck being upset upon-said also forming a valve seat whichis slightly raised above the surface of the plate, anoifset on said plate, on a level with the valve comprising a tubular stem,

said end extending" V plate to hold 'i the same upon the .tube, th e upset portion seat, a cut-off which rests upon said valve seat and said ofiset, a screw connecting. said cut-oil" to said plate, which for pivotally I enters said platebetween the ofiset and valve seat, and a resilient bowed washer interposed between the head of the screw and the cut-ofi', andmeans for operating the cut-ofi'.

In testimony whereof I afiix in presence of two wltnessesg FRANKYJACKSON. Witnesses v I G. SARGENT ELLIOTT,

ELIZABETH S ITH.

my signature five cents each, by addressing the Commissionerof Patents. 7 7 Washington, D. G. 

